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Why are gray whales dying in San Francisco's waters? US scientists search for clues
BBC ^ | April 19, 2026 | Nardine Saad

Posted on 04/19/2026 10:42:48 AM PDT by E. Pluribus Unum

California's blustery San Francisco Bay is home to the Golden Gate Bridge, commercial ports, public marinas and ferry boats. But more recently, a new sight is attracting locals' attention: Eastern North Pacific gray whales.

The whales have brought wonder, as residents and researchers now get to closely observe how they feed, breed and socially engage. They've also brought growing unease: why are so many of them undernourished and dying?

In 2025, a record number of 21 dead gray whales were found in the broader San Francisco Bay. So far this year, seven have died due to a combination of dwindling prey availability, climate change and human causes, researchers say.

The 4,140-sq-km bay is the largest estuary on the west coast of the US. Before 2018, this species of whales wasn't known to stop seasonally or consistently in the bay, bypassing it on their migration route down to Baja California and back up the Arctic, said Josephine Slaathaug, who led a recent study on gray whale mortality in the bay.

The impressive gray whales have the longest annual migration of any mammal, travelling an approximate 15,000-20,000km roundtrip to breed.

"It's a new habitat that they've chosen to utilise," the graduate student at Sonoma State University and the lead author of the paper tells the BBC, noting years of steep declines in their prey in the Arctic.

Many of those that turned up in the bay are adult and juvenile males that are heading to the Arctic. Notably, the whales observed are skinnier than they normally would be at this time of year, Slaathaug and several other researchers tell the BBC.

"They don't have the energy reserves necessary to complete the entire migration back to the Arctic, so they may be driven into the bay by hunger," she said.

Dead or dying gray whales have also cropped up in Washington...


(Excerpt) Read more at bbc.com ...


TOPICS: Pets/Animals
KEYWORDS: 3rdworldcraphole; aids; drugs; hairgelrunoff; stds
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To: E. Pluribus Unum

What are San Franciscans putting in the ocean nearby???


21 posted on 04/19/2026 11:34:17 AM PDT by Wuli ( )
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To: E. Pluribus Unum

Drug overdoses or sewage washing into the bay from streets and sidewalks.

EPA needs to crack down on San Francisco for allowing open air defecation.


22 posted on 04/19/2026 11:43:54 AM PDT by PAR35
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To: E. Pluribus Unum

It’s probably all the sewage being pumped up the coastline by Mexico into America. Pretty damn sick. Mexican sewage all over the beaches.


23 posted on 04/19/2026 11:51:26 AM PDT by FlingWingFlyer (Asshat the Piker needs to get his domestic terrorist ass out of my country. )
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To: E. Pluribus Unum

I blame China and over fishing.


24 posted on 04/19/2026 11:57:56 AM PDT by Nateman (Democrats did not strive for fraud friendly voting merely to continue honest elections.)
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To: E. Pluribus Unum
whales dying in San Francisco's waters?

Because they don't spend any time on the land.

25 posted on 04/19/2026 11:58:28 AM PDT by fruser1
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To: E. Pluribus Unum

Probably due to their moral character, as much the fault of their parents.


26 posted on 04/19/2026 12:04:31 PM PDT by BobL (Trusting one's doctor is the #1 health mistake one can make.)
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To: Honorary Serb

Agreed!
If they were any good they’d get enough people reading. Charging for a subscription is the another step to bankruptcy.


27 posted on 04/19/2026 12:12:06 PM PDT by Donbue
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To: doorgunner69

“The breakfast garbage that you throw into the Bay
They drink at lunch in San Jose.”
— Tom Lehrer


28 posted on 04/19/2026 12:43:38 PM PDT by dayglored (This is the day which the LORD hath made; we will rejoice and be glad in it. Psalms 118:24)
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To: E. Pluribus Unum
AIDS HIV contaminated water.

29 posted on 04/19/2026 12:59:02 PM PDT by Governor Dinwiddie ( O give thanks unto the Lord, for He is gracious, and his mercy endures forever. — Psalm 106)
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To: FlingWingFlyer
It’s probably all the sewage being pumped up the coastline by Mexico into America. Pretty damn sick. Mexican sewage all over the beaches.

I have no doubt that's a contributing factor.

And, as usual, the environmentalists are silent.

30 posted on 04/19/2026 1:18:03 PM PDT by Lizavetta
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To: Nateman
I blame China and over fishing.

No doubt.

31 posted on 04/19/2026 1:24:56 PM PDT by E. Pluribus Unum (If it ain't fun, you ain't doin' it right.)
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To: Nateman

I thought it was Japan.


32 posted on 04/19/2026 1:25:21 PM PDT by dfwgator ("I am Charlie Kirk!")
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To: E. Pluribus Unum

RUNOFF FROM URINE & FECES POWER WASHED OFF SAN FRAN SIDEWALKS.....PROVE ME WRONG


33 posted on 04/19/2026 2:22:35 PM PDT by ridesthemiles (not giving up on TRUMP---EVER)
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To: E. Pluribus Unum

Betcha it’s sewage, wastewater run-off.


34 posted on 04/19/2026 2:30:39 PM PDT by mewzilla (Swing away, Mr. President, swing away! 🇺🇸 🏴󠁧󠁢󠁥󠁮󠁧󠁿)
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To: mewzilla

https://www.epa.gov/ca/city-and-county-san-francisco-complaint


35 posted on 04/19/2026 2:32:21 PM PDT by mewzilla (Swing away, Mr. President, swing away! 🇺🇸 🏴󠁧󠁢󠁥󠁮󠁧󠁿)
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To: stanne

I would think that it would be the runoff from what is on the streets of San Francisco.


36 posted on 04/19/2026 2:33:22 PM PDT by jmcenanly (You have enemies? Good. That means you've stood up for something, sometime in your life.” ― Winston)
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To: E. Pluribus Unum

Raw sewage pollution run off from the streets.


37 posted on 04/19/2026 3:08:57 PM PDT by PIF (They came for me and mine ... now its your turn)
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To: E. Pluribus Unum

Surprise butt stuff from the San Francisco ferry?


38 posted on 04/19/2026 4:49:07 PM PDT by al baby
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To: al baby

"How to speak San Franciscan........Vah-Joy-Nah!"

39 posted on 04/19/2026 4:53:18 PM PDT by dfwgator ("I am Charlie Kirk!")
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To: E. Pluribus Unum

“Why are gray whales dying in San Francisco’s waters?”

Because they are near California?


40 posted on 04/19/2026 5:04:55 PM PDT by Bonemaker (invictus maneo )
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